A high and uniform temperature distribution along the outer surface of the combustion chamber is necessary to ensure a high radiation power density.
微燃烧室的外表面必须产生一个高而均匀的温度分布，以尽可能高地输出辐射能。
The maximal rectangle correction is introduced in the horizontal correction, also considering that the resist absorbed energy density distribution is different at different depth.
水平方向采用最大矩形法校正，同时考虑了抗蚀剂不同深度处吸收能量密度分布不同。
The grid generation method described in this paper can make the grid lines go through the dividing surface smoothly and continuously. Another feature of the method is that the grid density distribution in each block can be contro...
网格生成方法在分块生成网格时能保证穿过分界面上的网格线是光滑连续的，并且每块区域可根据流场特性来各自布置网格疏密，从而提高了流场流动分析中前处理环节的效率和精度。
In order to determine organic storage and its space distribution characteristics in paddy field of region, on the basis of second soil survey database, the space databases in unit of soil local type were set up by adoption Arcview software, integrated with GIS software, basined on soil type methods and region scale, the distribution of soil organic carbon storages in purple paddy soil of Chongqing were investigated. The results showed that the storage of SOC in Banan district of Chongqing was 6.48×10^6 t and average SOC density in Banan district with 8.31 kg/m^2 was higher than that of China.
为了明确区域稻田土壤碳库蓄积量及其空间分布特征，以全国第二次土壤普查数据资料为基础，运用地理信息系统软件Arcview建立研究区以土种为单位的空间数据库，结合GIS空间分析功能，基于土壤类型法估算重庆市巴南区稻田土壤有机碳储量及其空间分布特征，结果表明：研究区稻田土壤有机碳总储量约为6.48×10^6t，平均土壤有机碳密度为8.31kg/平方公尺，略高于全国平均水平。
The result shows that about 99.7% population distributes in short 20% oasis region, and the average pop_density in oasis region is about 6.7 times of the average poplation density in whole county. It indicates that the nature factor is a restrictive factor to the spatial distribution of population in MinQin...
发现民勤县99.7%的人口分布在民勤县不足20%的绿洲区内，区内人口密度达到全县平均人口密度的6.7倍；发现民勤县人口的空间分布格局很大程度上受到自然因素的限制，并为民勤县的可持续发展提供了建议。
By calculating semivariogram functions curves of different directions, it can be found that population density takes on a classical zonal anisotropy, which means that there were different structural characteristics in different directions for poplation distribution.
研究发现：在10种不同采样粒度上人口密度半变异函数都符合球状模型，表征着城市人口分布具有较强的空间自相关性和变异性；但由于粒度不同，人口密度的空间自相关尺度不同，块金值不同，基台值不同，块金值与基台值的比值差异较大，证明人口分布的空间自相关具有较强的尺度依赖性；对于700m粒度而言，通过计算不同方向的半变异函数曲线可以发现，沈阳市人口密度呈现典型的带状异向性，反映出人口分布在不同方向上具有不同的结构特征。
In order to determine the contrast of electron beam resist more precisely, the electron beam scattering in solid is simulated with the optimized model of electron beam scattering and modified Monte Carlo algorithm to obtain the energy deposition of different exposure in resist. Then combining with the distribution density of electron and making use of the definition of contrast, a simple model for contrast calculation is proposed. The comparison between the calculations and the experiment results reveals that the agreement is good.
为了更精确地确定电子束抗蚀剂的反差，借助优化的电子散射模型，利用改进的Monte Carlo算法模拟了电子束在固体中的散射过程，得到了不同曝光条件下抗蚀剂中的能量沉积分布，再结合电子的空间分布密度函数，根据反差的定义，提出了一种计算电子束抗蚀剂反差的简单模型，计算结果与实验结果基本一致。
The contrast calculations for different incident energy and resist thickness show: the contrast continuously reduces with the increasing of incident energy; and it increases with the reducing of resist thickness.4. The improved form of proximity function is proposed and applied to the calculation of the resist absorbed energy density distribution. The calculation gets over the limit of analytical method and Monte Carlo simulation, and can be really used to software.
对不同入射电子束能量、抗蚀剂厚度的反差的计算显示：随着入射电子束能量的增加，反差不断减小；随着抗蚀剂厚度的增加，反差不断增大。4、提出了邻近函数的改进形式，并用于计算抗蚀剂吸收能量密度分布，克服了解析法和Monte Carlo模拟法无法克服的局限性，使吸收能量密度的计算真正用于软件中。
Coupling simulated the velocity field, the temperature field, the density field and the burning-releasing heat field, and the relation between all sorts of operation parameters and the temperature distribution in boiler has been fully researched. 4. Put forward the two-stage numerical simulation method and obtained the technique taking the results of off-line numerical simulation transplant into on-line dynamic simulation, and realized the dynamic real time display of temperature profile in the boiler by establishing the mathematic model (i. e. the quantify relation) which describes the temperature distribution in the furnace effected by all sorts of operation parameters. The model precision reaches that relative error is less than 12%.
提出了基于风粉在线监测的炉内燃烧工况二重数值仿真方法，通过将炉内温度分布直接与操参数进行关联，解决了将离线数值计算结果向在线动态仿真过程的移植问题，实现了对炉内温度场的实时动态显示，并达到了必要的精度，有效地实现了对炉内燃烧状况的监测与诊断，进而可有效地指导操作参数的调整。
At the same time, multi-line (up to 4) and around; increased radial compaction bodies; of each release tension lines to carry out an independent control set, so neatly arranged winding wire, turn to turn a close uniform current density distribution.
同时采用多线(最多4根)并绕；增加径向压紧机构；对每根放线盘进行张力独立控制，从而使绕组导线排列整齐、匝间紧密均匀、电流密度分布均匀。
The results show that the sample possesses two-dimensional (2-D) hexagonally ordered mesoporous structure, and the pore volume of the sample is 1.88 cm3/g, the specific surface area is 1394 m2/g; it possesses mesoporous structure and narrow pore size distribution, the average pore size is 3.4 nm. The supercapacitor has good electrochemical performance, the specific capacitance is 95 F/g at a charge/discharge current density of 500 mA/g after 10000 cycles, and specific capacitance fluctuates between -4% and 4%.
结果表明：样品孔结构呈二维六角有序分布；该样品的孔体积为1.88 cm3/g，比表面积为1 394 m2/g，具有典型的中孔结构和集中的中孔分布，它的最可几孔径为3.4 nm；制备的中孔炭作电极材料组装的超级电容器有良好的电化学性能，在500 mA/g的充放电电流密度下，循环10 000次的平均比电容高达95 F/g，比容量波动范围仅为-4%~4%。
The results of the tests indicate that the spots where the fatigue short cracks initiated are at the bottom surface of the circle indention and some disfigurement places in that surface. The propagation paths of the cracks are very complex and the decentralization of the obtained data is very severe due to the micro organism of the material. While the distribution of the short fatigue cracks exist self-regularity on their length, angle, density and expansion rate of the cracks, which are less affected by the outer factors.
试验中观察到短裂纹形状多为Z型，试验结果表明疲劳短裂纹往往萌生于试样缺口底部表面和缺口表面缺陷处，其扩展复杂，路径曲折，数据分散性大，强烈地受材料微观组织的影响，疲劳短裂纹在长度、角度、密度和扩展速率方面虽数据分散但具有自身的规律，受外部因素的影响较小。
On the basis of the interaction mechanism of photon and substance, three factors which affect photon absorption efficiency are considered, including the electron density between absorption atoms, the number of inner orbital energy level, and the distribution of valence electrons in the absorption materials. According to the effect of irradiation to polymer microstructure, it is proposed that aromatic compounds or aromatic radicals, for example, benzene, not only have the stability of irradiation but also the ability of dispersing the energy of incident photon.
从光子与物质相互作用的机理出发，提出了影响光子吸收效率的因素：即吸收材料内吸收原子核间电子密度、内轨道能级大小和能级数量、价层电子的分布是制约材料吸收效率的三个主要因素；依据辐照对高分子材料微观结构的影响，提出了苯环等芳香族化合物或基团不仅其自身辐照时较稳定，且对入射光子能量具有弥散作用。
The spatial distribution of the flux density is investigated by the CCD method and calibrated by heat flow meter.
采用CCD法得到了能流密度的相对分布并用热流计标定出能流密度分布。
X-rays because of the human body, are subject to different levels of absorption, such as bone X-ray absorption than muscles to absorb the volume, then through the body of the X-ray is not the same, this will bring the body density distribution of the ministries of information, On the screen or photographic film on the role of fluorescence caused by the strong or weak or sensitive role there is very different and therefore the screen or photographic film will show a different density of the shadow.
由于X射线穿过人体时，受到不同程度的吸收，如骨骼吸收的X射线量比肌肉吸收的量要多，那么通过人体后的X射线量就不一样，这样便携带了人体各部密度分布的信息，在荧光屏上或摄影胶片上引起的荧光作用或感光作用的强弱就有较大差别，因而在荧光屏上或摄影胶片上将显示出不同密度的阴影。
Our calculation covered the spatial distribution of injected current density and its correlation with parameters of the top electric contact ring.
计算研究了电流密度空间分布及其与顶面电注入环参量之间的相互关联性。
In Order tO decrease the redundancy Of features extracted, fcature seIectiOn is carried Out step by step: firstly quOting PearsOn I'criteriOn and distOrtiOn criteriOn tO examine the nOrmality Of each feaure, then using paramster approach fOr nOrmal distributiOn features and K Parsen approach fOr abnOrmal distribution features tO estimate their Own cOnditiOnaI probability density respectiveIy; and then, dcpcnding On dass separability criteriOn Of EucIidean distance and probabiIity density apPIying twO feature selectiOn means tO chOOse the best features betWeen every tWO kinds Of IeukOcyte.
在降低信息冗余度的特征选择处理过程中，首先引用皮尔逊x`准则和偏度一峰度准则检验各特征量的正态性，并对正态分布特征采用参数法而非正态分布特征采用Parzen窗函数法分别估计其类条件概率密度；然后，基于欧氏距离和条件概率的类别可分性判据，分步骤结合单独最优组合法与l-r法这两种次优特征选择方法，在每两类白细胞之间筛选准最优特征组合。
With the elevation increasing, vegetation carbon density showed increase to decrease in distribution characters in the altitude scope of 4424–4804 m.
在海拔4424～4804 m范围内，随着海拔升高，植被碳密度表现出增加→减少的分布特征。
Using this model, the influence of the radial distribution of AMF on plasma parameters of vacuum arc are analyzed in four respects, i. e., the position of free boundary, the radial distribution of plasma density, the radial distribution of current density, and the radial distribution of potential drop across anode sheath.
利用这一模型分析了纵向磁场的径向分布对弧柱等离子体参数的影响，如自由边界的位置、等离子体密度的分布、电流密度的分布和阳极鞘层电压的分布。
Fine fuel cell structures and scales are benefit to the uniform distribution of reaction gas, the discharging of production, the reduction of fuel cell internal resistances. Increasing the porosity and aperture of diffusion layers can increase the limiting current density of fuel ce...
增加气体扩散层的孔径、孔隙率可增大电池的极限电流密度；降低电解质膜的厚度将会降低电池的内阻；提高运行温度和压力将改善电池内电化学反应和传质；加湿温度、反应气体的流速应适应电流密度的变化。